| Company | Timeline | Status | |
The Manna House Trust Limited Director • Retired | 27 Jan 1998←3 Months→21 May 1998 | Dissolved | |
| Fair Isle Bird Observatory Trust (The) Director • Author | 11 Mar 1989←3 Years→26 Feb 1993 | Active | |
| Fair Isle Bird Observatory Trust (The) Director • Unreported | 1 Jan 1970←23 Years→26 Feb 1993 | Active | |
